On 1/16/2016 5:00 PM, KA2WEU--- via time-nuts wrote:
Did my plot make it ? Ulrich
It did. Very impressive!
Dan
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Hi Dave,
Very good. Interesting you data is better than any typical data I could find
on the web which was -105 to -107 dBc/Hz at 10 kHz.
I need N0QO to get his 3048A up and running again so we can test some other
equipment.
What are you using for software?
At what frequency was this plot ma
Yes. Thanks Ulrich!
Cheers,
Magnus
On 01/17/2016 02:00 AM, KA2WEU--- via time-nuts wrote:
Did my plot make it ? Ulrich
In a message dated 1/16/2016 7:01:41 P.M. Eastern Standard Time,
r...@nc0b.com writes:
I did some interpolation to compare the specs for phase noise of the 8660
the way it
Yes
Rob
NC0B
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of KA2WEU--- via
time-nuts
Sent: Saturday, January 16, 2016 6:01 PM
To: time-nuts@febo.com
Subject: Re: [time-nuts] Phase Noise Comparisons
Did my plot make it ? Ulrich
In a message date
I always marvel at the argument that a $1 CPU can out-perform a bag of logic
which will be "more expensive". this is such utter hogwash, I really felt I had
to comment.
this view assigns zero cost to the software, development (IDE), programming, and
support of the code, a cost that dwarfs the
On 1/16/16 10:07 AM, Poul-Henning Kamp wrote:
In message <20160116080037.13903406...@ip-64-139-1-69.sjc.megapath.net>, Hal
Murray writes:
kb...@n1k.org said:
The astonishing part of this “new world” is that a very complex chip that is
made in high volume is cheaper than a handful of
Thanks to everyone who responded.
I guess I'm just showing my age (66).
Of course all those considerations of cost etc are all true especially in the
world of the professional who has to make the product feasible for the market.
I'm a basement tinkerer with a well-stocked junk box for whom the
Am 16.01.2016 um 15:03 schrieb Bob Camp:
Unlike the world of lithography, the dicing process has not made a lot of
progress.
Decades ago a 1mm x 1 mm die was about as small as you could get. From what
I can see that has not dropped by more than a factor of two in 40 years (if at
all).
Yes, ther
Its much more likely that the 6502 input stage is noninverting with a gain of
1+ 133/100. The LMH6702 is a current feedback amp as such the feedback resistor
is selected to ensure stability. Usually the value doesn't change much over a
range of gains. A value about 1/2 that recommendd on the dat
Hi
Ok, so:
Does broadband phase noise matter in a distribution amp? If so why?
Does ADEV matter on a distribution amp? If so why?
Does long term accuracy matter on a distribution system? (yes of course it
does).
Is there any benefit to a distribution amp having a lower floor than the source
Did my plot make it ? Ulrich
In a message dated 1/16/2016 7:01:41 P.M. Eastern Standard Time,
r...@nc0b.com writes:
I did some interpolation to compare the specs for phase noise of the 8660
the way it was done then to the present method. I think it is going to be
something like -105 d
Actually, I just acquired a HP3048a phase measurement system and I’m measuring
all of the my signal generators, one of which is an 8660c with the 86603
plugin. Attached (ignore the caption) is the result compared against the 3048a
internal 10mhz low noise reference.
David
> From: r..
Typically,one should not look at just on offset point, Here is an example.
73 de Ulrich
In a message dated 1/16/2016 7:01:41 P.M. Eastern Standard Time,
r...@nc0b.com writes:
I did some interpolation to compare the specs for phase noise of the 8660
the way it was done then to the
God kväll!
On Sat, 16 Jan 2016 06:00:54 +0100
Magnus Danielson wrote:
> > The two SR620s are both connected to an FS725 Rb frequency standard
> > (mostly because we have them around and nobody else uses them :-)
>
> It's being used, by you! ;-)
There is another one lying around, nobody uses...
Agreed with Magnus that there are a lot of possible variables in your setup
that need to be ruled out.
Are you using the SR620 driver in TimeLab, or did you find a way to get it to
emit data continuously via the RS232 port for use with the talk-only driver?
I've seen occasional instances whe
I did some interpolation to compare the specs for phase noise of the 8660 the
way it was done then to the present method. I think it is going to be something
like -105 dBc/Hz to -110 dBc/Hz at 10 kHz offset at 14 MHz carrier frequency.
As a comparison, the 8662A is about -135 dBc/Hz and the 86
I did some interpolation to compare the specs for phase noise of the 8660 the
way it was done then to the present method. I think it is going to be something
like -105 dBc/Hz to -110 dBc/Hz at 10 kHz offset at 14 MHz carrier frequency.
As a comparison, the 8662A is about -135 dBc/Hz and the 864
Hi
> On Jan 16, 2016, at 3:00 AM, Hal Murray wrote:
>
>
> kb...@n1k.org said:
>> The astonishing part of this “new world” is that a very complex chip that is
>> made in high volume is cheaper than a handful of less popular (but far less
>> complex) chips.
>
> It would be interesting to see t
In message <20160116080037.13903406...@ip-64-139-1-69.sjc.megapath.net>, Hal
Murray writes:
>kb...@n1k.org said:
>> The astonishing part of this “new world” is that a very complex chip that is
>> made in high volume is cheaper than a handful of less popular (but far less
>> complex) chip
Hi all,
I'm continuing with my distribution amplifier project described here:
http://www.anderswallin.net/2015/12/frequency-distribution-amplifier-first-tests/
http://www.anderswallin.net/2015/12/frequency-distribution-amplifier-v2-simulations/
The conclusion from those v1 board tests were that th
Attila,
On 01/14/2016 03:38 PM, Attila Kinali wrote:
Moin,
I have here a setup with four (FPGA) nodes that produce synchronized pulses
with a 20kHz rate. I have two SR620s two measure those pulses.
Because the SR620s are not fast enought to capture all pulses, and because
i want them to be syn
kb...@n1k.org said:
> The astonishing part of this ânew worldâ is that a very complex chip that
> is
> made in high volume is cheaper than a handful of less popular (but far less
> complex) chips.
It would be interesting to see the die sizes.
Another advantage of the CPU solution is that y
On 1/14/2016 12:35 PM, Nathan Johnson wrote:
What does the group think of the HP 8660? Just scored a broken one too cheap to
pass up. I know it's not gonna be the last signal generator I buy, but for under
$100 shipped it should be an interesting project.
Nathan KK4REY
When I worked at HP, I
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